31/12/2016
How To Repair Dead Motherboardchip level motherboard Repair
Chip levelmotherboard RepairFirst check motherboard for physical damage and Burt break components .Dead Condition of Motherboard such as intel, asus,gigabyte, Chinese, dell, hp,msi, zebronics, step by stepIf Motherboard DeadCheck Suspected Circuits Point to PointVRM Supply CircuitCpu Core Volt CircuitAny Power ShortingSignal ShortingI/O Ic FaultyMCH Ic Short (Memory control Hub)PIIX ShortRepairing Method and
StepsStep 1
Check VRM Circuit All Components Such as:-Main Mosfet.Supporting Mosfet.Filter Capacitor .And VRM IC. Short or OPen condition Any Component first Remove ComponentFrom Motherboard PCB with help of SMD Machine .And Check Shorting or Open with Multimeter.
Step 2
Check CPU Core Volts Circuit.Check All Capacitor After output Coilsterminals any one and more capacitor are short or open. replace all Capacitor.If computer hang in Bios that mean output Coils are short Replace Coils .
Step 3
Any Power Path ShortTrace all Power 3.3v, +5v, -5v,+12v, -12v - Volts Path any one pathare shorting . check also power pathParallel Components (Capacitor, Diode etc.)
Step 4
Signal Path ShortingIf any Data and Address Signal shortthen Display not come in Motherboard. so also check all Bus path Cpu To all Main Ic Circuit Such As=> Memory Controller Data Path, Clock Generator Data and Address Path, MCH, PIIX, Sound IC, Lan Ic, Chipset Ic etcCheck All Parallel Components-capacitor, Resistor, diode, coils etc.Replace all Bad Components.
Step 5
Input Output Ic Faulty.If Motherboard doesn't on by Trigger then check I/O Ic .First Check +5v operating volts,if volts not come check supply path and components.If volts available in Ic then Check high SMPS Green Cable Path. First desolder all ic's pin for dry soldering .Last Option replace the Ic Step 6
MCH And PIIX Chip Shorting.First check Chip Overheating If Chip Are Overheat that Means Chips Are short And Non Repairabale check operating volt and mosfet
